Photoelectric Photometry of the RS CVn Binary EI Eridani = HD 26337
Document Type
Article
Publication Date
5-1-1989
Description
Differential UBV(RI)KC and UBVRI photometry of the RS CVn binary EI Eridani obtained during December 1987 and January 1988 at fourteen different observatories is presented. A combined visual bandpass light curve, corrected for systematic errors of different observatories, utilizes the photometric period of 1.945 days to produce useful results. Analysis shows the visual light curve to have twin maxima, separated by about 0.4 phase, and a full amplitude of approximately 0.06 mag for the period of observation, a smaller amplitude than reported in the past. The decrease in amplitude may be due to a decrease or homogenization of spot coverage. To fit the asymmetrical light curve, a starspot model would have to employ at least two spotted regions separated in longitude.
Citation Information
Hooten, J. T.; Strassmeier, K. G.; Hall, D. S.; Barksdale, W. S.; Bertoglio, A.; Cortesi, S.; Cutispoto, G.; Engelbrektson, S.; Ganis, M.; Gómez, J. M.; Casas, R.; Gallart, C.; Jariod, E.; Ito, Y.; Melillo, F. J.; Ohshima, O.; Poole, R. S.; McLaughlin, T. A.; Powell, H. D.; Nix, R. M.; Soder, J.; and Wasson, R.. 1989. Photoelectric Photometry of the RS CVn Binary EI Eridani = HD 26337. Astrophysics and Space Science. Vol.155(1). 45-51. https://doi.org/10.1007/BF00645206 ISSN: 0004-640X